How to make tasks only visible to the user, to whom the task is assigned

I have created a workflow and also using assignment rule (round robin) for assignment of tasks of users of same role. so, whenever a task is assigned to someone, anyone else with the same role is able to see his tasks.

how can I make them visible to the one, whom to the task is assigned.

Do u solve the problem? i am same problem with you, i don’t know how to do a setting when i assign a todo or task to a user, others not allowed to check

Link each employee ID to their tasks and assign appropriate user permissions to every employee.